Switch.



W. s. vMRLOW.

' .swITGH. APPLICATION FILED APR, 29, 1909.

1,1 03,5 1 1, Patented July 14,1914.

@MMW

said nis Toal' cmf'itmay concerns" --Beit-lhiown=. that I, WmLIAM. S.- Harrow, 1 Fia feitilze'u* 'ofither United' States,

residing at .Sycampscott-, county of Essex, and State of M -a aohusettsg-x-Lhavef invented anI Improveme TilSiiv-itches,vk of which ,y thev following mfcomleeti ontv with the accomrawinfgf-isa specification, 'like hey dra-wing. representing like one fiiiheoonsumption circuit extending fr'mfthe" meter? and to dot-his involves 4brealkingf'theciicuit'at the point where the xii'fe'ntiolifI aims' tof? provide' a\ 'novel whichfacilitates' greatly this oper'- *conriectilg' Y the' testing instrument .with'` 'the translating' devices, and

eaiiis' which* thel instrument can beV con' ctedf upwitldt'breal'ringfthe circuit acfas toi-Mecc tliejflights': @other translating y my switch` Fig. 3.; Fig.

inveht-ion'antlfthexr poi-nt vout the novel -feat-'ares thereof in thcvappendedclaims. l Itgtlerleatvin'gs, Figure 1i is a diagrammatic view showing 'the' manner-k. which is used; lFig, l2 :is va section through the completed switch, said section being taken osub'stantially the* line a-a, 3 is a"- top" plan view of the base of the switch';` Fig. 4 is' a section" onl the line b-b, Fig. 2. Inl the drawing 3 designates? the meter from which extend the wires 4 and 5 of the consumption circuit/thatsupplies cilrrent to the translating devices 6.

7 are the wires of the main circuit leading i to the meter 3.

In testing the meter it is customary to use'a testing instrument which is designated/,fy

lgenerally by 8 and which is inserted in one of the mains of the consumption circuit, so that said instrument-.is in series with the translating devices. My im roved switch is especially designed to permit the testinginstrument 8 ,to be 'thus connectedwithout breaking the circuitI through the translating devices, and in the present embodiment of Y my invention, said 'switch comprises a. base 9 of insulating material which is adapted'A to y rder tcfftest elect-rio meters,y it is `cusy ternary -pflacefa' testing instrument in "'"sid'e' 'Specimen-oaofreftersifateia;

numimmd M189 1909-- Serm No. waste. l

be' secured to a wall or other support' at some convenient point adjacent the meter 3.- This base has"l thereon two terminals 10 and 121,

g each constructedl tohave securedthereto two engaging the wires occupying -wires- Vhile these terminalsmay' have any sui-table construction; 1 have shownf` eachC of themas having two wireereceivifng 'apertures 123,.` 13, into `which thewires' may and as carrying-,clamping screws 14, 1 '5 for the apertures and clamping' saidwires in position. These ternriinalsy are adapted to'be electrically connected together by means of a switch member. 16, and said switch-member is so con'- structedi-that it canv be swung intosuch a po`.

sition as to breakv the electrical; connection between thfe ter1nr1inals .'v Iiind`= it convenient to so pivot the' switch member to one' ofthe @terminals that lef-may beJ brought into or out of engagement with the other terminal.

,to the translating 2O may be loosened and and: 3, theterminals will' ne'cted together 'through 1 but if the switch memberisswung into= the terminals will other as will be obvious..` Under' 4ordinary .rulli line position, thus As herein shown'the switch member is piv'- oted to the 'end of 'the' terminall 10 by means of a-screwj 18, and said switch' member is provided with a slotl19- which is adapted to fit over the'shankof a screw QO-that'- is carried by the en'dfof theterminali-tl, said screw' 20 acting as a keeper.l When the sw-itch member 1&6 is-in the' ful-l' line position Figs'.` 2

be electrically ccnthe switch member,

dotted line position Figs.- 2 and' 4*,- the two be disconnected from each conditions the switch member 16"is inthe connecting the two terminals 10 :and 11, and it may be held' in -such positionby tightening up the screw 20 v :which then aots'asy a clamping screw to hldl the switch member in osition.

The wire leading from t e meter is connected to the terminal 10 and another wire 5a is connected to the terminal 11 and leads devices, the two wires 5, l5HL constituting one side of the consumption circuit.

When it is desired to connect up the testing instrument. 8, the two wires Q1 and 22 leading therefrom are placed in the wirereceiving apertures 13 of the -two terminals 10 and 11 and are clamped therein by means of the clamping screws 15. This may bereadily done as will be obvious without breaking the consumption circuit. After' the instrument is properly connected the screw the switch member Patcntcduuly' 14, 17914.

be' inserted,

i be `applied to the block or base 9, and which v'meter has -been 16 thrown info the dotted line position Fig.

2 thereby threwingall the current around through the testing instrument. When the properly tested, the -switch member 1'6 is thrown back into the full line position and the instrument may then be disconnected, all of which can be done Withoutdisturbing any way the How of current through the translating devices.

In order to prevent unauthorized persons from tampering with the sWitchI have provided means for sealing the switch sothat the inspector can readily determine whether theswitch has been disturbed since his last visit. In thus sealing'the switch, IV have herein shown a cover which is adapted to covers and incloses both vof theterminals vwith seals 29.

and the switchmember'l. This cover is5 means. of a sealing wire ereover, and the ends of` held in osition b which passthrou vh apertures 27 `in ears-28 extending from t e base, and are provided through insulating tubes 30 which extend through apertures in the cover 25, and these tubes are provided .with flanges or heads 31 i on :their mner ends which -partiallyre-A vso ceived-by recesses 32 formed -in -the'ba'se 9.

The apertures in the end ofthe over 25 t the'insulatingltubes 30 and'thus said tubes 'cannot be wit visremoved;

The cover 25 is'shown as provided on its sides with extensions 35 which embrace the sides of the insulating block 9. At the ends drawn except when the-cover thecover rests on the top thereof, as own 4in Fig. 2. These extensions 35 act as a means for insuring the -proper positioning of the cover on the base. l I have shown herein onl one embodiment of my invention and it w' l be obviousthat various .changes may be made in the con-A structional parts wlthout departing from the invention.

1. In an entering terminals' sustained electrically' conx'lectv c 4inclosing said terminals and provided 654 The wires 5,'. 5*- are led.

ears and in c fully described my invention; ann

'Letters 'PatentV ist"- switch, the combination N with a base of insulating. material provided with 'two recesses in its upper ii-.two

byv the-baseT said n ccver openings opposite the terminals,

4means connecting the cover. tof the basa-ind insulatingjtubes for theline "through the openings inthe coverfmdpro vided with` Iianges which occupy the reosl $0 inthe base.

2.. In an entering switch, the with a base of insulating material provided with two recesses in. its upper'fece, offtwo` terminals .sustained by the b fto. t5 connect -said terminals electri y, a cover inclosing said terminals .and provided on' 'opposite sides with extensions te embrace the base, ears extending from the opposite ends of the base and projecti' beyond the 70 casing, a sea.' wire exten said ears rand'inc osing the cover, andinsulating tubes for the line wires extending through o nings-n the ends of the cover and4 provi ed with flanges w-hichl occupy the. fi l 1.

recesses in the base.-4

3. In an entering switch, the combmatlon with .afbase, of 'two terminals sustain'edthereby, a cover 'incl'osing' said terminals and provided' with extensions on opposite 80..

sides which vembrace the sides of the ears extending from the ends of the and -a wire extending through.

' the. cover. v

In testimony'w ereof, I have signed my 85 in the presence 'of b b3 mid.

name to this specication, two subscribing witnesses. I HARLOW.

Witnesses:.' Bram F. HEUsEn, THOMAS J. D xtnrnoNp. 

